Ten years ago, two researchers from ETH Zurich developed Climeworks, a firm specializing in extracting carbon from the air. Experts now say that technology is essential for keeping global warming under control, together with carbon reduction measures. Climework’s CEO and co-founder Christoph Gebald expects a global carbon tax by 2030, which will help cover the high costs involved. “Classical VCs are not interested in what we are doing since it is a very long term venture,” he told Paula Dupraz-Dobias. But the company has found backers among a number of wealthy, forward-looking individuals in Switzerland.